News Earth Climate fix could deplete polar ozone Effect would be especially large after extremely cold winters Share this:FacebookTwitterPocketRedditPrintEmail By Sid Perkins April 25, 2008 at 10:11 am This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe